﻿THE ENTOMOLOGICAL MAGAZINE, Vol. III. Pt. に 



15 



1. Stenosyrphus lasiophthalmus Zett. (pi. i. fig. 7 ひ， ん） 

 Syrphus lasiophthalmus Zett. Dipt. Scand. 11, 35, 37 (i843); 

 var. saghalinensis, n. 



ScHiN. Faun. Austr. Dipt. I. p. 307 (1862). 

 Aneous black. Face pale yellow, with a bluish tinge, facial stripe 

 aeneous black, reaching nearly up to the antennae ； oval margin and 

 cheeks in the male aeneous black, in the female largely yellow ； in the 

 male fuscous, in the female pale yellowish pubescented. An arch above 

 the antennal-insertions and vertex fuscous, in the female front grayish 

 yellow pruinose, fuscous pubescented. Antennae fuscous. Compound 

 eyes in the male with very few, short whitish hairs. Thorax pale fulvous 

 pubescented, shining, pleurae and pectus grayish ； scutellum yellow, on 

 the sides near the base black, with yellowish haris, mingling some black 

 hairs on the hind marp-in. Winers hyaline, veins fuscous, stigma yellow- 

 ish brown. Calypteres whitish, haiteres orange yellow. Abdomen linear, 

 a little broader in the female, black, with 3 pairs of oblong yellow spots, 

 each situated near the anterior margin of the respective segment, and 

 not reaching- to the lateral margin, the 4th and 5th segments each on its 

 hind narrow margin yellowish, the 5th on each side at base with a trian- 

 gular yellow spot ； pale yellowish pubescented, mingling some short black 

 hairs. Venter grayish fuscous, with pale yellowish spots on the sides. 

 Legs black, knees yellow, the coloring being much more extended in 

 the middle legs. 



Length ― ^ ^. 91-O mm. 



Hab. 一 Saghalien (Shiska, Motodomari) many specimens collected 

 by the authors. 



2. Stenosyrphus motodcmariensis Mats, (n.sp.) 



(PI. ir, fig. 11.) 



Much resembles to S. lasiophthalmus , but differs from the latter 

 as follow : 



Body much smaller. In the male front entirely aeneous black, vertex 

 fuscous, in the female front and vertex bluish black, between the vertex 

 and front with 2 grayish yellow pruinose spots. Face strongly polished, 

 in both sexes the lower part of the face beak-iike produced, cheeks aene- 

 ous black, oval margin long and narrow. All the abdominal spots reach 



